Improvement



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Cooking Stove.

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Cooking Stove.

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UNITED v STATES PATENT OFFICE.l

GARDNER OHILSON, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT iN COOKING-STOVES.

Specilication forming part of Letters Pa To all whom it may concern:

Beit known that I, GARDNER GHILsoN, of Boston, in the county ot' Suffolk and State of Massachusetts, have invented an Improved Cooking-Stove; and I do hereby declare the same to be fully described in the following specification, and represented in the accompanying drawings, oi' which- Figure l is a longitudinal and vertical section taken through the middle of the stove. Fig. 2 is another longitudinal and vertical section, taken through one of the outer ilues which run underneath the oven. Fig. 3 is a transverse and vertical section taken through the vertical diving-flue against the back of the oven. Fig. 4t is a horizontal section taken through the lues beneath the oven. Fig. 5 is a side elevation of the stove. Fig. 6 is a transverse section of it, such section being taken through Athe grate, and so as to exhibit the bay surroundin g one of the ends of one of the journals of the grate. Fig 7 is an edge view of such bay.

The saidbay is exhibited at A as consisting of a projection in the forni of a hollow box or conic frustum extended from one of the side plates, a, of the stove, and having an elongated opening, b, made through its sidev and in the same plane with a hole, c, formed through or in one of the journals d of the grate B, such journal being projected beyond its bearing e and into the interior of the bay. The long slot or hole in the bay should be provided with a closing-slide, f, (see Fig. 8,) which is a cross section of the bay.

By moving the slide so as to uncover the hole leading into the bay a person will be able .to insert a lever in such hole and into the recess or hole of the grate-journal, and with such lever he can so move or vibrate the grate as to discharge ashes or coals therefrom.

In the said drawings the grate is exhibited as at the lower part of the tire-place C, which, with the ash-chamber D, is disposed in front of the oven E, and has a smoke-flue, F, leading directly over the oven.

Against the lower part of the back of the oven is an arched chamber, G, which runs from the bottom plate of the stove and opens at its rear into the discharge-hue L, and at its front into the middle ue, K, which goes underneath the oven.

tent No. 55,4166, dated June 12, 1866.

There is in rear ot' the oven, and over the said chamber G, and on opposite sides oi' the latter, a descending tlue, H, which opens into the two outer lines, I l, which go underneath the oven, and at their fronts connect with the tlue K, arranged between them.

In each of the ilues I I and K there is a heat-saving plate, It, which is not only arranged a short distance above the bottom of the iue, or so that there may be an air-space, S, between it and such bottom, but it has an inclination from'the receiving end to the discharging end of the Hue, whereby the flue becomes gradually contracted from end to end.

The object of the plate R and air-space S between it and the stove-bottom below it is to save heat or prevent the smoke from coming into direct contact with the said bottom plate and having its heat abstracted thereby. The heat thus saved from being lost through the bottom plate will be, as Vit were, so much gain to the oven. The inclination of the heat-sav ing plate It, by producing a gradual contraction of the smoke-flue, Inore or less arrests the heat, and thus adds to the efficiency of the ue in producing an equal or approximately equal distribution of the heat against the part of the oven which is exposed to the tlue.

I'also arrange on opposite sides oi the chamber G, and within the descending tlue H, 'other heat-Savin g plates, M, which are disposed near to the back plate, N, of the stove, and so as to prevent it from abstracting heat from a column of smoke while owing through the lue E.

A direct-draft opening, O, provided with a damper, I?, leads fromthe top ue of the oven into the discharge-due L.

The stove in other respects is to be made like others in common use.

The chamber G, with its arched top, is an important part of my stove, as it not only constitutes a receiving-mouth for the dischargeiiue, but its top serves to divide the smoke and deflect it into the two branches of the descending iiue, in order that the smoke may be re ceived in equal quantities by the outer iiues going under the oven.

I make no claim to the simple addition to the side or the bottom plate of a ilue of a stove of a casing arranged with a space between it and the outer side of the iiue, as my invention consists in an arrangement of a plate 'within and throughout a ue, and so that there may be an insulated air-space between the plate and the bottom of the iiue, and such plate be nearer at one end to the said bottom than itis at the other, so as to incline, as and for the purpose specified; nor do I claim the arrangement'oi' lines as shown in Patent No. 25,451, in which there is but one lue going underneath the entire oven, from back to front thereof, and communicating With a return-Hue placed in and belo1 theA tirst tine, but not in contact with the oven, so as to impart heat thereto. In my improvement there are two separate iiues and a return-iiue, each of which is underneath and against the oven, and operates to heat it; and, besides, the receivingohamber G extends up in rear of and against the back plate of theoven. Therefore, my arrangement ot' the oven, the chamber G, and the tlues underneath and in rear of the oven differs Very materially from the arrangement exhibited in the said patent.

I claiml. The arrangement of the separate heatsaving plate Within each of the oventlues and case ofthe stove, so as not only to perform its function of saving heat, as described, but to gradually diminish the smoke-passage through the flue, in manner as specified.

2. The combination and arrangement of the arched chamber G with the oven, the vertical iiues at the back of the oven, and with the three iues arranged beneath and against the oven, in manner as explained.

3. The combination and arrangement of the bay A and its side opening and its closingslide With the stove-body and with the gratejournal, as described.

GARDNER CHILSON.

Witnesses:

R. H. EDDY, L. HULL. 

